Data recording apparatus

Abstract

It is necessary to provide a data recording apparatus that records a digital broadcast and facilitates the editing of recorded data. It is also necessary to provide a data recording apparatus that makes it possible to achieve high-quality playback of edited data with increased ease. In accomplishing these and objects, there is provided a data recording apparatus for recording a digital broadcast. The data recording apparatus comprises first recording means for recording externally input stream data, which is in transport stream (TS) format, onto a recording medium, and second recording means for generating data in program stream (PS) format in accordance with the TS format data and recording the generated PS format data onto the recording medium. The PS format data is edited in such a manner that the associated editing information is reflected in TS format data playback.

1 . A data recording apparatus comprising: 
 a first recorder which records externally input content onto a recording medium as first data;    a generation unit which generates second data from the first data, the second data being different in format from the first data;    a second recorder which records the second data onto the recording medium; and    a controller which exercises control so as to output the first data from the recording medium in a case where the content is to be played back and exercises control so as to output the second data from the recording medium in a case where the content is not to be played back.    
   
   
       2 . The data recording apparatus according to  claim 1 , the case where the content is not to be played back includes a situation where the content is to be edited or dubbed.  
   
   
       3 . The data recording apparatus according to  claim 1 , wherein the first data is recorded in MPEG-TS format; and wherein the second data is recorded in MPEG-PS format.  
   
   
       4 . The data recording apparatus according to  claim 2 , wherein the first data is recorded in MPEG-TS format; and wherein the second data is recorded in MPEG-PS format.  
   
   
       5 . A data recording apparatus comprising: 
 a first recorder which records externally input content onto a recording medium as first multiplexed stream data;    a generation unit which generates second multiplexed stream data from the first multiplexed stream data, the second multiplexed stream data being different in multiplex format from the first multiplexed stream data;    a second recorder which records the second multiplexed stream data onto the recording medium;    an editor which edits the second multiplexed stream data; and    a controller which exercises control so as to output the first multiplexed stream data from the recording medium in a case where the content is to be played back and exercises control so as to output the second multiplexed stream data from the recording medium in a case where the content is to be edited or dubbed.    
   
   
       6 . A data recording apparatus comprising: 
 a first recorder which records externally input content onto a recording medium as first multiplexed stream data;    a generation unit which generates second multiplexed stream data from the first multiplexed stream data, the second multiplexed stream data being different in multiplex format from the first multiplexed stream data;    a second recorder which records the second multiplexed stream data onto the recording medium;    an editor which edits the second multiplexed stream data; and    a reflecting unit which reflects the results of the second multiplexed stream data edited by the editor in the first multiplexed stream data.    
   
   
       7 . A data recording apparatus comprising: 
 a first recorder which records externally input first data and the editing information about the first data onto a recording medium;    a generation unit which generates second data from the first data, the second data being different in format from the first data;    a second recorder which records the second data and the editing information about the second data onto the recording medium;    an editor which edits the second data;    a first rewriting unit which rewrites the editing information about the second data in accordance with the results of editing the second data; and    a second rewriting unit which rewrites the editing information about the first data in accordance with the second data editing information rewritten by the first rewriting unit.    
   
   
       8 . The data recording apparatus according to  claim 7 , wherein the first data is played back in accordance with the first data editing information rewritten by the second rewriting unit.  
   
   
       9 . The data recording apparatus according to  claim 5 , wherein the first multiplexed data is multiplexed in MPEG-TS format; and wherein the second multiplexed data is multiplexed in MPEG-PS format.  
   
   
       10 . The data recording apparatus according to  claim 6 , wherein the first multiplexed data is multiplexed in MPEG-TS format; and wherein the second multiplexed data is multiplexed in MPEG-PS format.  
   
   
       11 . The data recording apparatus according to  claim 7 , further comprising: 
 a first editing information addition unit which adds editing information to the first data; and    a second editing information addition unit which adds editing information to the second data.    
   
   
       12 . The data recording apparatus according to  claim 8 , further comprising: 
 a first editing information addition unit which adds editing information to the first data; and    a second editing information addition unit which adds editing information to the second data.    
   
   
       13 . The data recording apparatus according to  claim 5 , wherein the editing information about the first multiplexed stream data contains at least the information indicating the position of a boundary between chapters within the first multiplexed stream data.  
   
   
       14 . The data recording apparatus according to  claim 6 , wherein the editing information about the first multiplexed stream data contains at least the information indicating the position of a boundary between chapters within the first multiplexed stream data.  
   
   
       15 . The data recording apparatus according to  claim 5 , wherein the editing information about the first multiplexed stream data contains at least the information indicating whether or not to skip chapters within the first multiplexed stream data during stream playback.  
   
   
       16 . The data recording apparatus according to  claim 6 , wherein the editing information about the first multiplexed stream data contains at least the information indicating whether or not to skip chapters within the first multiplexed stream data during stream playback.  
   
   
       17 . A data recording apparatus comprising: 
 an editing information addition unit which adds editing information to stream data that is multiplexed in MPEG-TS format;    an editor which edits the stream data;    a writing unit which writes information edited by the editor into the editing information; and    a recorder which records the stream data and the editing information.    
   
   
       18 . The data recording apparatus according to  claim 7 , wherein, in a situation where a chapter is deleted from the first data editing information, the second data editing information includes skip information for skipping the deleted chapter.